by Kastro
Paper/Archive/CVE-2021-42377

CVE-2021-42377

busybox busybox — An attacker-controlled pointer free in Busybox's hush applet leads to denial of service and possible code execution when processing a cra…

EPSS 4%CVSS 9.8
critical.is priorityof 100
47
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 89.5.895 × 2017.9No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

An attacker-controlled pointer free in Busybox's hush applet leads to denial of service and possible code execution when processing a crafted shell command, due to the shell mishandling the &&& string. This may be used for remote code execution under rare conditions of filtered command input.

Affected

ProductAffectedFixed inSource
busyboxunspecified – < 1.34.01.34.0CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refjfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrogadvisorylists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXSadvisorylists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGVrefsecurity.netapp.com/advisory/ntap-20211223-0002refclaroty.com/team82/research/unboxing-busybox-14-vulnerabilities-uncovered-by-claroty-jfrog